Gas-heated comb.



No. 736,266. f PATENTED AUG. 11, 1903.

GAS HBATBD 00MB.'

APPLIuA'oN FILED MAY 9, 1902. No MODEL.

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IIIHIIUH' I H1111 UNITED STATES' ratentea August 1i, 190e.

PATENT Fries.

GAS-HEATED CONIB.

SPECIFICATION forming part of Letters .Patent No. 736,266, dated August 11, 1903.

I Application led May 9J 1902. Serial No. 106.542. (No model.)

To all whom, t may concern:

- Be it known that I, RENO D. O. JOHNSON, a citizen of the United States, `residing in the city of St. Louis, in the AState of Missouri, have as the back for' the comb 2.

invented certain new and useful Improvements in Gas-Heated Combs, of which the following is a full, clear, and exact description, reference being hadto the accompanying drawings, forming part of this specification.

My invention relates to a comb for drying hair, and, brieliy stated, it embodies a construction wherein nameless gas combustion is produced within the heater of the comb.

My invention consists in features of novelty hereinafter fully described, and pointed out in the claims.

Figure I isa longitudinal sect-.ion of my comb. Fig. `II is an enlarged cross-section taken on line II II, Fig. I. Fig. II-I is an enlarged cross-section taken on line III III, Fig.- I. Fig. 1V is a side view of the comb-.heater at the location of the catch that connects the heater-cylinder to the gas and vent tube coupling-head.

1 designates a heater-cylinder that serves The outer end of the heater-cylinder is closed by a cap 3.

4 is a handle tted on the heater-cylinder to be grasped by the operator in the use of the comb.

5 designates a coupling-head that is provided with ducts 6 and 7, that pass through nipples 8 and 9, carried by saidv coupling-head. The nipple 8 receives the attachment of a gasconducting flexible tube 10, and the nipple 9 receives the connection of a vent flexible tube 11.u

12 isa plug attached'to the coupling-head f 5 and adapted to be slipped into the burnercylinder 1 forthe connection of said cylinder tothe coupling-head. The cylinder 1 is detachably held to the plng'12 by a spring-catch 13, that is provided witha button 14 and is adapted to engage in the notches 1a of a slot 1b, contained by the rear end `of the heatercylinder 1. l Y

15 is'a burner-carrying plug located in the heater-cylinder l at a point in proximity to the rear end of thecomb 2, said plug being provided with an air-duct 16 and vent-ducts17.

18 is a burner-tube having its rear end seated in the plug 15 and projecting forwardly the forward end of said burner-tube.

21 is a protec tor-tube located in the forward portion of the heater-cylinder at the location of the burner-tube and platinum tube.

22 designates a gas-conducting tube having its rear end seated in the coupling-head 5 and having communication with the gassupply duct 6. The forward end of this gasconducting tube is provided with a jet 28, arranged in thc burner-tube 18, to deliver gas into said tube. 24 is a' Vent-escape tube located between the heater-cylinder 1 and the gas-conducting tube 22 and concentric with said cylinder and tube.` The rear end of said vent-escape tube is seated in the plug 12, and the forward end is seated in thei burner-carrying plug 15 and its interior has communication lwith the ducts 17.

25 is an air-inlet through which air enters the heater-cylinder 1 to circulate in the chamber between said cylinder and the vent-escape tube 24 and to pass from said chamber through the air-duct 16 in the burner-carrying plug 15 to supply air for combustion in thebu rnertube 18.

In the practical use of my comb it is put in condition for service by disconnecting the coupling-head 5 and the plugs 12 and 15 from the heater-cylinder and withdrawing `them therefrom, together with the parts theycarry, this disconnection being permitted by releasing the catch 13 from the heater-cylinder. The platinum tube 19 is then heated and the parts are all replacedas before. Gras.` is then permitted to iow through the flexible conducting tube 10 through the conductingtube 22 to the burner-tube and is therein consumed by contact with the heated platinum tube with iiameless combustion that serves. to heat the comb. As the gas is burned, fresh air is .l constantly supplied to the burner by entering through the inlet 25 and passing through the heater-tube and air-duct 16, and the unconsumed products of combustion and odors escape through the vent-duct 17, ventescape tube 24, and 4fiexble vent-tube 11 to a suitable point of discharge.

IOO

I claim as my inventionl. The combination with a heating-cylinder, of an imperforate platinum tube inserted within the cylinder, two tubes also inserted into the heating-cylinder, communicating with the platinum tube and providing a space between them and the inner Wall of the cylinder, and a communication between the interior of the platinum tube and the space formed between the tubes and the cylinder.

2. The combination with a heating-cylinder, and comb-teeth thereon, of two concentrically-arranged tubes within said cylinder, the outer tube being of a diameter less than the cylinder to provide a space between the walls of the cylinder andthe outer tube, and a platinum tube also within the cylinder, communicating with the space between the walls of the cylinder and outer tube.

3. In a gas-heated comb, the combination of a heater-cylinder, having an air-inlet, a burner-carrying plug arranged in said cylinder and provided with an air-duct and a ventduct, a burner-tube carried by said plug, a platinum tube also carried by the plug, sur- Y rounding and inclosing said burner-tube, and

gas and vent tubes seated in said plug, having communication with said burner-tube and platinum tube, and spaced from the inner wall of the cylinder to provide a communication between the interior of the platinum tube and the air-inlet.

4. In a gas-heated comb, the combination of a heater-cylinder having an air-inlet, a burner-carrying plug seated in said cylinder and having an air-duct and a vent-duct, a burner-tube carried by said plug, a platinum tube also carried by the plug surrounding and inclosing said burner-tube, a gas-conducting tube leading into said burner-tube, 

